equinox.css

#popupcontent {
      position: absolute;
      visibility: hidden;
      overflow: hidden;
      background-color:#F9F9F9;
      border:0px solid #333;
      padding:5px;
}

.hidden {
      position: absolute;
      visibility:hidden;
      overflow: hidden;
}

div.collapsable {
	display: none;
}